Air ventilator for helmet

ABSTRACT

An air ventilator for a helmet that can enhance the assemblability and stability by improving the assembly structure of the air duct assembled to the top of the helmet, is disclosed. The air ventilator comprises an air duct  20,  a guide rail  40,  and a slider  50.  The air duct  20  is assembled on the top surface of the helmet  1  so as to cover around a plurality of air ventilation holes  1   a.  The guide rail  40  has both sides bent upward widthwise and bent again in the direction of the edge of the width to form first flanges  41.  The slider  50  has both sides bent upward widthwise and bent again in the direction of the center of the width to form second flanges  51  and slidably mount on the guide rail  40  in close contact with the bottom of the air duct  20.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a motorcycle helmet, and more specifically to an air ventilator for a helmet that can enhance the assemblability and stability by improving the assembly structure of the air duct assembled to the top of the helmet and furthermore can aim at the certification of motorcycle safety specification (i.e. SNELL) and the stability of quality.

2. Description of the Related Art

In general, during the driving of a motorcycle, a helmet for protecting the head of the wearer must be worn to protect the head of the wearer, and a shield is installed in the front of the helmet so that the wearer can have his field of vision not obstructed and can solve breathing difficulty.

And when the operator wears the helmet, the air in the helmet is not ventilated, so the temperature inside of the helmet rises as time passes. As the temperature inside of the helmet rises like this, the wearer feels headache or dizziness, so he has difficulty and inconvenience in that he has to ventilate the air of the helmet by taking off the helmet and putting it on again for a moment while he is wearing the helmet.

FIG. 5 is a lateral view showing a conventional air ventilator for a helmet in disassembly, and FIG. 6 is a plan view showing the conventional air ventilator for the helmet.

As shown in these drawings, in the structure of the conventional air ventilator, a plurality of ventilation holes 1 a are formed on the surface of the helmet 1 for air inletting and outletting, and an air duct 2 is installed around the ventilation holes 1 a for getting the venturi effect. The air duct 2 takes in outside air into the inside of the helmet 1 through the ventilation holes 1 a so that the operator can discharge the air inside of the helmet 1 without taking off the helmet 1. Normally, the air duct 2 is fixed on the surface of the helmet 1 by a screw 3.

In the structure in which the conventional air duct 2 is assembled to the helmet 1, a screw is used to fix the air duct 2 to the surface of the helmet 1, but it is not in conformity to the motorcycle safety specification test, so it cannot be applied. Also, the air duct may be attached by using double-sided tape, but it is difficult to apply it due to difficulty of quality assurance.

SUMMARY OF THE INVENTION

Therefore, it is an object of the present invention to provide an air ventilator for a helmet which is configured such that the air duct is fitted to the helmet detachably so as to improve assemblability and stability, conforms to the motorcycle safety specification, and assures the quality.

In accordance with another aspect of the present invention, there is provided an air ventilator for a helmet comprising: an air duct which is assembled on the top surface of the helmet so as to cover around a plurality of air ventilation holes la communicating the inside and outside of the helmet; a guide rail in which both sides are bent upward widthwise and bent again in the direction of the edge of the width at a predetermined distance so as to form predetermined projection portions and also first flanges with a predetermined width are formed on the edges and fixed on the surface of the helmet in close contact; and a slider in which both sides are bent upward widthwise and bent again in the direction of the center of the width at a predetermined distance so as to form predetermined projection portions and also second flanges with a predetermined width are formed on the edges, and are slidably assembled on the guide rail in close contact with the bottom of the air duct.

Preferably, the first flanges of the guide rail have a narrowed width toward one end in a longitudinal direction.

Preferably, the guide rail is attached to the surface of the helmet by double-sided tape, and a screw hole is formed in the center of the guide rail, so that the guide rail is screwed to the helmet by a screw inserted into a screw hole.

Preferably, a through hole is formed in the center of the slider, and a fixed protuberance having a predetermined length which is inserted into a through hole is formed on the bottom of the air duct, and a push waster is inserted onto the end of the fixed protuberance that is protruded through the through hole.

BRIEF DESCRIPTION OF THE INVENTION

Other objects and aspects of the present invention will become apparent from the following description of embodiments with reference to the accompanying drawings in which:

FIG. 1 is an exploded perspective view of the main parts illustrating an air ventilator for a helmet according the present invention;

FIG. 2 is a perspective view illustrating the structure of a guide rail according to the present invention;

FIG. 3 a perspective view illustrating the structure of a slider according to the present invention;

FIG. 4 is a sectional view taken along the line A-A of FIG. 3;

FIG. 5 is an exploded lateral view illustrating a conventional air ventilator for a helmet;

FIG. 6 is a plan view illustrating the conventional air ventilator for the helmet.

DESCRIPTION OF THE PREFERRED EMBODIMENT

Below will be described in detail a preferred embodiment of the present invention with reference to the accompanying drawings.

FIG. 1 is an exploded perspective view of the main parts illustrating an air ventilator for a helmet according the present invention. As shown in FIG. 1, a guide rail 40 is fixed on the top surface of a helmet 10 by a screw 60, and a slider 50 is sidably mounted on the guide rail 40. The slider 50 is fixed on the bottom of an air duct 20 so that the air duct 20 is slidably assembled along the top surface of the helmet 10.

FIG. 2 is a perspective view illustrating the structure of the guide rail according to the present invention. As shown in FIG. 2, the guide rail 40 has its both sides bent first upward and then bent again in the direction of the edge of the width at a predetermined distance so as to form first flanges 41 with a predetermined width on the edges of the guide rail 40. In the center of the guide rail 40 is formed a screw hole 42 into which a screw 60 is inserted so as to be screwed with the helmet 10.

To assemble the guide rail 40, first attach an adhering means such as double-sided tape 70 to the bottom of the guide rail 40 to assemble the central portion of the guide rail 40 to the surface of the helmet 10. Next, screw the screw 60 to a screw hole 42 to firmly fix the guide rail 40 to the surface of the helmet 10.

Meanwhile, FIG. 3 is a perspective view illustrating the structure of a slider according to the present invention. The slider 50 that is slidably assembled to the guide rail 40 has both of the widthwise sides bent first upward and then bent again in the direction of the center of the width at a predetermined distance to form predetermined projection portions so as to form second flanges 51 with a predetermined width on the edges of the slider 50. In the center of the slider 50 is formed a through hole 52, and around the through hole 52 is formed a washer groove 53 in which a push washer 80 is seated.

During the assembling of the slider 50, insert a fixed protuberance 21 formed in protrusion on the bottom of the air duct 20 into the through hole 52 of the slider 50 in close contact. Next, press the push washer 80 onto the end of the fixed protuberance 21 protruded through the through hole 52, that is, forcibly insert the fixed protuberance 21 to fit in the central wash hole 81 of the push washer 80 to firmly fix the slider 50 on the bottom of the air duct 20.

And, the push washer 80 under external pressure is seated in the washer groove 53 to minimize outside exposure so as to reduce the effect of external force to the maximum to make it possible to fix the slider 50 to the bottom of the air duct 20 more firmly.

During the assembling of the guide rail 40 and the slider 50, the first flanges 41 of the guide rail 40 fixed on the surface of the helmet 10 are slidably mounted on the second flanges 51 of the slider 50 fixed on the bottom of the air duct 20, so that it is possible to fit the air duct 20 on the helmet 10.

And, one end of the first flange 41 of the guide rail 40 has a narrowed width in a longitudinal direction, so that it is possible to make the sliding motion of the first flanges 41 of the guide rail 40 on the second flanges of the slider 50 more smoothly.

Namely, the user assembles and disassembles the air duct 20 to and from the helmet 10 by sliding it handily, so the work is very easy, and also it is possible to satisfy the above-mentioned motorcycle safety specification and stabilize the quality.

According to the present invention, there is provided an air ventilator for a helmet which is configured such that the air duct is fitted to the helmet detachably so as to improve assemblability and stability, conforms to the motorcycle safety specification, and assures the quality.

Although the present invention has been described in detail reference to its presently preferred embodiment, it will be understood by those skilled in the art that various modifications and equivalents can be made without departing from the spirit and scope of the present invention, as set forth in the appended claims. 

1. An air ventilator for a helmet comprising: an air duct which is assembled on the top surface of the helmet so as to cover around a plurality of air ventilation holes communicating the inside and outside of the helmet; a guide rail in which both sides are bent upward widthwise and bent again in the direction of the edge of the width at a predetermined distance so as to form predetermined projection portions and also first flanges with a predetermined width are formed on the edges and fixed on the surface of said helmet in close contact; and a slider in which both sides are bent upward widthwise and bent again in the direction of the center of the width at a predetermined distance so as to form predetermined projection portions and also second flanges with a predetermined width are formed on the edges, and are slidably assembled on said guide rail in close contact with the bottom of said air duct.
 2. The ventilator according to claim 1 wherein the first flanges of said guide rail have a narrowed width toward one end in a longitudinal direction.
 3. The ventilator according to claim 1 wherein said guide rail is attached to the surface of said helmet by double-sided tape, and a screw hole is formed in the center of said guide rail, so that the guide rail is screwed to said helmet by a screw inserted into a screw hole.
 4. The ventilator according to claim 1 wherein a through hole is formed in the center of said slider, and a fixed protuberance having a predetermined length which is inserted into a through hole is formed on the bottom of said air duct, and a push waster is inserted onto the end of said fixed protuberance that is protruded through said through hole. 